Machine for removing floor coverings



.Bufie 18, 1935. w. E. OVERELL MACHINE FOR REMOVING FLOOR COVER I NGS Fil ed Feb. 28, 1935 s Sheets-Sheet 1 l wwwmw .fi @inmm m 3 June 18, 1935. w. E. OVERELL MACHINE FOR REMOVING FLOOR COVERINGS 5 Sheets-Sheet 2 Filed Feb. 28, 1935 Aw m .Jhme 18, 1935. w. E. OVERELL MACHINE FOR REMOVING FLOOR COVERINGS Filed Feb, 28, 1935 3 Sheets-Sheet 5 Patented June 18, 1935 UNi'i'E STATESPATENT OFFICE MACHINE FOR REMOVING FLOOR COVERINGS Walter E. OverlLFlintridge, Calif. Application February 28, 1935, Serial No. 8,782 14 Claims. (01. 16483) The present invention relates to'new and usemachine to operate where there are variations ful improvements in a machine for removing in the thickness of the covering and also any uncoverings, such as linoleum or the like, which evenness in the floor itself. have been cemented to floors. The invention will now be described in detail,

An object of the invention is to provide a mareference being had to the accompanying draw- 5 chine which may be operated to cutthe floor covings. The supporting base consists of a pair ering into strips and to sever the cement bond of side members H, 12, each of which is provided so as to progressively remove the covering from with an upstanding front end portion 5 ta, i2a, rethe floor in strips. spectively. The side members are held together A further object of the invention is to provide by a rear plate I3 suitably secured thereto and by 10 a machine of the type referred to'wherein a cuta front plate M which is Secured the 8115 D ting blade is vibrated to sever the cement bond tions Ha, 52a and to the side members It, i2 by between the floor and the covering. bolts it or the like. A pair of side plates ii, iii are A still further object of the invention is to prour d to h upp r edges o the Side members i vide a machine of the type referred to wherein l2 e p t ysecured o t p at E3 is 15 the cutter for severing the cement bond may be a handle and control suppor device Which C011- raised and lowered and the inclination thereof sists of p irs of arms I9, 20. The arms i9 are shifted at the willv of the operator. joined by a handle roller 2!. A plate 22 secured A still further object of the invention is to roto h m 0 has mounted h n three paced vide, in a machine of the type referred to, a means notched quadrants a 0f Which a p v 20 whereby the supporting base may be moved for- 1y mounted thereon a latch handle for engaging ward during the cutting operation. the notchestherein. The two outer handlele- The above and other objects of the inventio vers 24 are connected by rods 25, 25a to the free will in part be obvious and will be hereinafter ends of levers 25a iespectiVely, Whifih are 25 more fully pointed out. pivotally mounted on a bracket 2'1 secured to the 25 In the accompanying drawings: frame I ll. The center lever 25b is connected by a Figure 1 is a Side ele ti of th machine rod 28 to a lever 29 which is also pivotally mount Figure 2 is a top planview of the cutting device ed 011 the bracket and the supporting base, The side members I I i2 are provided with 30 Figure 3 is a front elevation of the cutting de- Openings 31311 in which'are mounted housing 30 vice and the supporting base. members 3|, 3 la respectively which carry suitable Figure 4 is a fragmentary side elevation of the anti-friction bearings 32 for the ends of a shaft Supporting base t t cutting device in 33. Abelt wheel 34 carried by the shaft 33 is conraised position. nected by a belt 34a to an electric motor 35 which 35 Figure 5 is a view i il r to Fig, 4, ith th is supported on a platform 36 pivotally connected 35 tt devise in amwered pgsition to the frame H] between the side plates ii, iii. Figure 6 is a sectional View taken along line There is provided Suitable Spring ans 3 a or 6-42 of Fig. 2. taking up any slack in the belt 34a. A plurality Figure 7 i a diagrammatic i of th tt of weights M are mounted on the base in order to actuating c m provide a suitable inertia mass for a foundation 40 The invention relates generally to a, machine from which to move the blade forward and thus for removing floor coverings, such as linoleum or render h Operation 0f t e machine more eifecother hard-surfaced coverings, from floors to tive. which they have been cemented, and generally A pair of flexible plates or supports 38, 35341. are

contemplates the provision of a supporting base suitably mount d on the plate Each Plate 45 on which is mounted a cutter head and means for ries a bracket 39, 39a at the free end thereof on operating said cutter head. The invention also which are pivot mounted levers 3% respecprovides means whereby the supporting base may .tively. One end of each of the levers 5%, Mia is be advanced to progressively remove thefioor connected by a link ll, Ma (see Fig. 6) respec- 50 covering. The cutting device includes means for tively to the levers 26, 26a. The opposite ends of 50 severing the cement bond between the floor and the levers 4i], Ma are pivotally mounted on pins the covering and also means for cutting the cov- .42, 42a respectively, which are carried by bracket ering whereby it may be removed in strips. There arms 43, 430; on the clamping plate M. An arm is also provided means for adjusting the inclina- 45 rigidly mounted on the clamping plate 44 extion of the cutting device whereby to permit the tends rearwardly between the brackets 53, 43a 55 and is connected by a link 46 (see Fig. 6) to the lever 29.

The shaft 33 carries eccentrics 41, 41a which are provided with grooves for the reception of balls 48 disposed between the grooved raceways 49, 49a on the eccentric straps 55], 50a respectively. The eccentric straps are provided with connecting rods 5i, 5m which are pivotally mounted on the pins 42, 52a respectively whereby to vibrate the clamping plate 4. Counterweights 52, 52a are carried by the shaft 33 in order to dampen vibration. As shown diagrammatically in Fig. 7, the eccentrics ll, 42 a are set slightly apart, that is, one is advanced with respect to the other so as to advance one end of the clamping plate 44 ahead of the other end alternately and thus impart an. oscillatory movement thereto. By setting the eccentrics evenly, however, the clamping plate 44' may be given a straight reciprocatory movement.

The clamping plate 14 carries a horizontal cutter blade 53 for severing the cement bond between the covering and the floor. A pair of vertical cutter blades E i, S te are suitably mounted on the ends of the clamping plate 44 for cutting the floor covering into strips.

The supporting base i0 is provided with brackets 55, 55a which carry rollers 55, 56a respectively. These rollers do not touch the surface when the base is resting on the side members ll, l2, but the machine may be moved about by grasping the handle 2! and tilting the machine backwards so that it will be supported by said rollers 56, 56a.

A platform 51 is provided with serrations 58 which may be embedded in the floor covering to aiiord a firm engagement therewith. An operating lever 59 is pivotally mounted on the platform 5'! and is connected to the supporting base If! by links 653. A motor control switch 6| is mounted on the arms 28 whereby the operator may conveniently control the operation of the cutting device.

In operation, by tilting the supporting base to rest on the rollers 56, 56a, the machine may be moved to a proper starting position where the base is then set down to rest on the side members ll, l2. To start an initial cut in the floor covering, the center latch handle 25b is moved to the position shown in Fig. 1. This movement of the lever 25b operates through the rod 28 to raise the lever 29 and the link 4% which operates through the arm 45 to turn the clamping plate 44 about the pivotpins 42, 42a. in order to direct the cutting blades downwardly. The switch 6! is then thrown on to start the motor 35 which rotates the shaft 33 through the driving belt 34a. The eccentrics 4?, Ma cause a reciprocation of the clamping plate 44 through the connecting rods 5!, 5 la which are pivotally connected to the pins 42, 42a carried by the clamping plate. Because of the offset position of the eccentrics relative to one another, the cutting head will be caused to oscillate although, as stated heretofore, a straight reciprocatory movement may be im parted thereto by proper adjustment of the eccentrics. After the initial cut in the fioor covering has been made, the lever 25b is moved upwardly to reduce the inclination of the cutting blades. The side handle levers 24 may be moved to various positions in order to adjust the depth or inclination at which the cutter head operates after the initial out has been made. When the handle levers 24 are in the position shown in Fig. 1, the blade clamping plate is in the position shown in Fig. 4. When the levers 24 are moved in a clockwise direction, the levers 26, 26a will be raised by the rods 25, 25a and this will raise the links 4|, lla. This movement of the links 4|, 4 la will move the levers Ml, 40a about their pivotal connecting point on the brackets 39, 39a respectively, causing the ends which are pivotally mounted on the pins 42, 42a respectively to descend, thus lowering the cutter head. In this way, the position of the cutting blades on the clamping plate may be varied according to the thickness of the floor covering. Similarly a movement of only one of the outer levers 24 will efiect a change iin the angle of the clamping plate 4 in order to operate over floors having an uneven or sloping surface. The operator, standing on the platform 51, can effect all the above changes. In order to progressively cut the floor covering, the operator can advance the entire supporting base l6 by pushing on the lever 59 which operates through the links 69 to advance the base and cutting head.

It is to be noted that the entire cutting head is supported bythe resilient plates 38, 38a which permit the oscillatory movement thereof. When either end of the clamping plate M3 is retracted by the corresponding connecting rod, the resilient plate adjacent the same end will be forced toward the front plate M, thus increasing the initial tension therein so that, at the next forward stroke of that end of the clamping plate 44, the stored energy in the adjacent resilient plate will aid in forcing the cutter head forward. The cutter head, while supported by the resilient plates 38, 33a, is pivotally mounted on the ends of the levers 40, 480. which in turn are pivotally mounted on the brackets 39, 35a carried by the resilient supporting plates 38, 3812 respectively.

'It will be obvious from the foregoing description that an extremely simple and efiicient machine is herewith provided. 'It is to be clearly understood that minor changes in the details of construction and arrangement of parts may be made without departing from the scope of the appended claims.

Having thus described the invention, what I claim as new and desire to secure by Letters- Patent, is

l. A machine for removing coverings cemented to floors, comprising a supporting base, a cutter head carried thereby, vertical cutters mounted on said head for severing the covering into strips, and a cutting blademounted on said head and extending between said vertical cutters for severing the cement bond between the floor and the covering.

2. A machine for removing coverings cemented to floors, comprising a supporting base, a cutter head carried thereby, means for vibrating the cutter head, vertical cutters mounted on said head for severing the covering into strips, and a cutting blade mounted on said head and extending between said vertical cutters for severing the cement bond between the floor and the covering.

3. A machine for removing coverings cemented to floors, comprising a supporting base, a cutter head carried thereby, means for vibrating said head, vertical cutters mounted on said head for cutting the covering into strips, a cutting blade mounted on said head and extending between said. vertical cutters for severing the cement bond between. the covering and the floor, and means P for advancing the supporting base whereby to progressively remove the floor covering.

4. A machine for removing coverings cemented to floors, comprising a supporting base, a cutter head, means for vibrating the cutter head,

vertical cutters mounted on said head for severing the covering into strips, a cutting blade mounted on said head and extending between said vertical cutters for severing the cement bond between the floor and the covering, means for raising and lowering the cutter head and changing the inclination thereof, and means for advancing the supporting base whereby to progressively remove the floor covering.

5. A machine for removing coverings cemented to floors, comprising a supporting base, a cutter head, means for mounting said head on said supporting base for movement relative thereto, a shaft journaled in the sides of said base, means for rotating said shaft, means including eccentrics carried by said shaft for imparting an oscillatory movement to said head, vertical cutters mounted on said head for severing the covering into strips, and a cutting blade extending between said cutters for severing the cement bond between the covering and the floor.

6. A machine for removing coverings cemented to floors, comprising a supporting base, a pair of resilient plates mounted on said base for limited movement relative thereto, cutter head, means for pivotally supporting said head on said plates, means for oscillating said cutter head, vertical cutters mounted on said head for severing the covering into strips, and a cutting blade extending between said vertical cutters for severing the cement bond between the covering and the fioor.

7. A machine for removing coverings cemented to floors, comprising a supporting base, a pair of resilient plates mounted on said base for limited movement relative thereto, a pair of levers pivotally mounted on the ends of said resilient plates, a cutter head, means for pivotally mounting said cutter head on the forward ends of said levers, means connected to the opposite ends of said levers for adjusting said cutter head, vertical cutters mounted on said head for severing the covering into strips, a cutting blade extending between said vertical cutters for severing the cement bond between the covering and the floor, and means for vibrating said cutter head whereby to remove the covering in strips.

8. A machine for removing coverings cemented to floors, comprising a supporting base, a pair of resilient plates mounted on said base for limited movement relative thereto, a pair of levers pivotally mounted on the ends of said resilient plates, a cutter head, means for pivotally connecting said head to the forward ends of said levers, a second pair of levers pivotally mounted on said base, links connecting said first-named levers with said second pair of levers, means connected to the free ends of said second pair of levers for adjusting the height of said head and the inclination thereof, vertical cutters mounted on said head for severing the covering into strips, a cutting blade extending between said vertical cutters for severing the cement bond between the covering and the floor, and means for vibrating said head whereby to remove the covering in strips.

9. A machine for removing coverings cemented to floors, comprising a supporting base, a pair of resilient plates mounted on said base for movement relative thereto, .a pair of levers pivotally mounted on the ends of said resilient plates, a cutter head, means for pivotally mounting said head on the forward ends of said levers, means connected to the opposite ends of said levers for adjusting the height and inclination of said head, an arm extending rearwardly from said head, means connected to the free end of said arm for adjusting the vertical angle .of said head, vertical cutters mounted on said head for severing the covering into strips, a cutting blade extending between said vertical cutters for severing the cement bond between the covering and the floor, and means for vibrating the cutter head whereby to remove the covering in strips.

10. A machine for removing coverings cemented to floors, comprising a supporting base, means for advancing the supporting base, a cutter head, means for mounting said cutter head on said base for movement relative thereto, vertical cutters mounted on said head for severing the covering into strips, a cutting blade extending between said vertical cutters for severing the cement bond between the covering and the floor, a shaft journaled in the sides of said base, means for rotating said shaft, eccentrics carried by said shaft and offset with respect to one another, and means connecting said eccentrics with said head whereby to impart an oscillatory movement thereto.

11. A machine for removing coverings cemented to floors, comprising a supporting base, a cutter head mounted on said base for limited movement relative thereto, means for vibrating said head, vertical cutters mounted on said head for severing the covering into strips, a cutting blade extending between said vertical cutters for severing the cement bond between the covering and the floor, a stationary platform on which an operator stands, and means connecting said platform to said base and operable from said platform for advancing said base whereby to progressively remove the floor covering in strips.

12. A machine for removing covering cemented to floors, comprising a supporting base, a cutter head carried thereby, means for imparting an oscillatory movement to said cutter head, vertical cutters mounted on said head for severing the covering into strips, and a cutting blade mounted on said head and extending between said vertical cutters for severing the cement bond between the floor and the covering.

13. A machine for removing covering cemented to floors, comprising a supporting base, a cutter head, means including resilient plates for mounting said head on said base for limited movement relative thereto, means for imparting an oscillatory movement to said cutter head, vertical cutters mounted on said head for severing the covering into strips, and a horizontal cutting blade mounted .on said head and extending between said vertical cutters for severing the cement bond between the floor and the covering.

14. A machine for removing covering cemented to floors, comprising a supporting base, a cutter head, means for mounting said cutter head on said base for limited movement relative there to, means for imparting an oscillatory movement to said cutter head, vertical cutters mounted on said head for severing the covering into strips, a horizontal cutting blade mounted on said head and extending between said vertical cutters for severing the cement bond between the floor and the covering, and means for advancing said supporting base whereby to progressively remove the floor covering.

WALTER E. OVERELL. 

